Watlow F4T User Manual (English)

Other manuals for Watlow F4T

Installation And Troubleshooting User’S Guide59 pages

Questions and Answers:

A
Angela HorneAug 31, 2025
What to do if my Watlow Controller has no display?
- T
  Tina MaldonadoSep 1, 2025
  If your Watlow Controller has no display, there could be several reasons: * The power to the controller might be off, so turn the power on. * A fuse might be open, in which case you should replace the fuse. * The breaker might be tripped, so reset the breaker. * The safety interlock switch might be open, so close the interlock switch. * A separate system limit control might be activated, so reset the limit. * There may be a wiring error; correct the wiring issue. * The voltage to the controller may be incorrect; apply the correct voltage and check the part number.
K
Kelly GreenAug 31, 2025
How to troubleshoot error input on Watlow Control Unit?
- A
  Andrew FordAug 31, 2025
  To troubleshoot 'Error Input' on your Watlow Control Unit, check if the sensor is improperly wired or open, and correct the wiring or replace the sensor. Ensure the setting matches the sensor used, and check the calibration of the controller.
L
Luis JohnsonAug 30, 2025
How to fix loop reversed error on Watlow Control Unit?
- J
  Jessica LoweAug 30, 2025
  To correct a 'Loop Reversed Error' on your Watlow Control Unit, set the correct Open Loop Detect Time and Deviation value for your specific application. Ensure the output function is correctly set. Check the thermocouple wiring, making sure the red wire is connected to the negative terminal.
A
Anthony McdowellAug 29, 2025
How to fix loop open error on Watlow Control Unit?
- A
  Alex MorganAug 29, 2025
  To resolve a 'Loop Open Error' on your Watlow Control Unit, set the correct Open Loop Detect Time and Deviation value for your application. Determine the cause of the open thermal loop, such as misplaced sensors, load failure, or loss of power to the load. Alternatively, deactivate the Open Loop Detect feature if it is not needed.
P
Phillip BlankenshipAug 28, 2025
Why is my Watlow Control Unit showing alarm low?
- K
  Kristin BerryAug 29, 2025
  If your Watlow Control Unit displays an 'Alarm Low' message, it might be because the temperature is below the alarm set point. Check the cause of the under-temperature situation. Clear any latched alarms and establish the correct alarm set point. Also, set the alarm source to the proper setting.
T
tylergarzaAug 28, 2025
What causes alarm high on Watlow Control Unit?
- R
  Rebecca WalkerAug 28, 2025
  If your Watlow Control Unit displays an 'Alarm High' message, it could be because the temperature is higher than the alarm set point. Check the cause of the over-temperature condition. Also, clear the latched alarm, establish the correct alarm set point, and set the alarm source to the proper setting.
L
Lawrence RodriguezAug 27, 2025
How to resolve current error on Watlow Control Unit?
- X
  xkennedyAug 27, 2025
  To resolve a 'Current Error' with your Watlow Control Unit, replace any shorted solid-state or mechanical relays. Route the load wire through the current transformer from the correct output, selecting the output that drives the load. Consider replacing or repairing the sensor or controller. Ensure wires are appropriately routed, check for loose connections, and add line filters.
N
Nicole JonesAug 27, 2025
What to do for heater error on Watlow Control Unit?
- C
  cgarrettAug 27, 2025
  To address a 'Heater Error' on your Watlow Control Unit, check that the load current is proper. If the current through the load is above the current trip set point, correct the cause of the overcurrent and ensure the current trip set point is correct. Also, check that the load current is proper. Correct the cause of the undercurrent and ensure the current trip set point is correct.
R
robert39Aug 26, 2025
How to fix limit error on Watlow Control Unit?
- E
  Ethan NelsonAug 26, 2025
  To solve a 'Limit Error' on your Watlow Control Unit, check for improperly wired or open sensors and correct the wiring or replace the sensor. Ensure that the setting matches the sensor used and check the calibration of the controller.
R
robertbarnesAug 25, 2025
What causes alarm error on Watlow Control Unit?
- J
  Jeffrey OrtizAug 26, 2025
  To resolve an 'Alarm Error' on your Watlow Control Unit, first check if the sensor is improperly wired or open. If so, correct the wiring or replace the sensor. Also, make sure the setting matches the sensor being used and check the calibration of the controller.

Watlow F4T Specifications

General

Inputs	Thermocouple, RTD, mA, V
Outputs	Relay, SSR, mA, V
Communication	Ethernet, Modbus RTU
Data Logging	Yes
Certifications	CE, UL, cUL, RoHS
Control Modes	PID, On/Off
Power Supply	100 to 240 VAC
Operating Temperature	0 to 50°C
Enclosure Rating	IP65
Display	4.3 in. (109 mm) color touch panel LCD
Control Loops	Up to 4